Bad Machine?

Clint KY wrote:when I awoke it seemed like it was barely outputting any air

I have that happen every night. Go to bed with a hurricane up my nose and wake up to a gentle breeze that I barely feel.
We get used to the pressure. It's very common.
But go ahead and test it for your own peace of mind.

The manometer is a good idea.

You can actually sort of make your own manometer of sorts by sticking the end of the hose into a bucket of water and seeing how far below the surface of the water you have to go before it stops making bubbles. If you have 10 cmH2O, it should work 10 cm below the surface of the water. Watch our for splashed water, especially if you use something narrow like a water glass.

Is there any chance you're just used to the pressure after a while? It sounds like you're saying it isn't.

Figure out some objective test, such as disconnecting the hose from the mask and letting the air blow something like a piece of paper a few inches away. (Or the manometer.)

Definitely take the hose off the mask, plug the end and check for leaks when it's broken. Listen and feel for air leaks.

Further update: I got the gauge (more on that in a bit) and last night awoke unable to breathe. Checked the level and it was good (as I suspected) so the machine is fine and the problem is me. My nasal passages seem to close up after 3 or 4 hours of being on the machine. I see the Sleep Doctor tomorrow and hopefully he can suggest something.

The CPAP Gauge I got is the small clear plastic manometer type. Some webpages say it can be used for CPAP and BiPAP. Not so. CPAP - Yes, BiPAP - NO. It is restrictive enough that the machine goes into EPAP mode (lower pressure) as soon as it hooked up. My machine supplier has one that is larger around and will show the IPAP and when the hole in the top is blocked shows the EPAP. Not so the one that retails around $26 or so.